Sander.



J. M. COLEMAN.

SANDER.

APPLICATION FILED ocT.1,1o12.

1,072,20@g Patented sept. 2, 1913.

inarrEn sTarEs PATENT oEEroE.

Imran.- cctama.' or MONTKEAMQUEBBC, ,CANADA SANDER.

Specification of Letters Patent Application Bled October 1, 1912.Serialv No. 723,334.

Patented Sept. 2, 1913.

'terial such as'sand, and the principal application of the-device is tothe sand boxes of locomotives, street cars and the like.

A further object is to provide a sand discharging device of greatsimplicity andetliciency, and one which will not become clogged withpebbles or other objects which may be found in the sand.

The device consists essentially of a pair of substantially conicalhoods, the lower of which is provided with a large central dischargepassa e.- The upper hood is provided with t e nozzle projecting into thedischarge passage.

In the ldrawings which illustrate the inventiom-Figure 1 is a plan view.Fig. 2 lshows on the left a front elevation and on the right a sectionon'. the line 2, Fig. 1. F ig. 3 shows on the left a side elevation andon the right a section on the line 3, Fig'. 1. 80 `Referring moreparticularly to'the drawings, 5 and 6 desi ate hollow conical hoods ofwhich 6 is the smaller-,and is arranged below Vand partially' withiiithe'u per hood 5. These two hoods are preferably cast, and when somade-are connected by a pair of radial webs 7, which holdithem a certaindistance apart, thus Aforming a substantially annular passage 8. Thelower hood 6 is provided with a large central supporting 40 neck 9 whichis threaded at 10 and is provided with a large central passage 11, theupper portieri 12` of which is flared; The upper hood is`provided at theapex with a threaded nipple 13. to which a compressed air pipe 14niayibe screwed. Above the threads this nipple is substantially conicalVin forni so that an annular recess 15 is formed betr/een the nipple andpipe. Within thev ood 5 is a nozzle 16 tapered at .its lower enit asshown at 17 and project-ing a short distanceinto-the flared mouth 12 ofthe discharge passage'll. A small air pasthe box and being secured to asuitable dis-l charge pipe byA means of the threads 10.A When the box isfilled with sand, the force of gravity acting on'the'sand above forces60 the-sand Vpart .way up in the annular pas# sage 8. Then air is turnedon through the pipe 14, it passes through the reduced aperture 18 withvery high velocity and creates `a partial vacuum between the hoods,-which draws the sand in through the passage 8 into the passage v11through which it is discharged by gravity and by theair blast. The areaof the passage 8 is so much greater than the area of the passag e 11that a con- 70 vsiderable portion of it may be closed with pebbles orthe like without interferinor with the efliciency of the device. Thewidth 4of the passage 8 is considerablyless than the diameter of thepassage 11,50 that nothing 7'5 can .enter between the hoods which wouldclog the passage 11. The annular space 15 around the nipplefo'rms apocket for anyM scale which may-break from the 'inside of the airpassage 18.

The; device may also be used by applying asuction device to the passage11` In this f case, however, a separatorwould need to be provided forthe sand'and air to prevent 85 sand being drawn into the suction device.

Having thus described my invention, what I claim is l. A device of 'thecharacterdescribed ccmprisinga pair4 of integral conical hoods 90 spaceda short distance apart, a discharge passage through th centerof onehood, and a blast nozzle atta hed to the other hood projecting a shortdistance into said passage..

9,. A devi'ie of t-he character described lcomprising a pair of conicalhoods arranged. one vwithin the other and Aspaced apartv whereby anannular passage 'is forrped between the two hoods, a central dischargepassage through the inner hood communicating with the annular passage,and a nozzle secured to the other hood 'and project-ing a.A shortdistance into said discharge passage the pipe 1l, and thus preventsblocking of 50,

whereby a fluid jet of high velocity issuing hoods arranged co-axiallyone within the -other and spaced apart to form an annular passage, aneck projecting from within the into the discharge passage, and athreaded l inner hood having a dischargev passage nipple at the apex ofthe outer hood forming therethrough flared at its upper endand acontinuation of the nozzle, said'nipple communicating with the annularpassagega havingits end tapered whereby an annular nozzle secured withinthe outer hood havscale' pocket Will be formed between the niping itslower end/tapered and projecting a ple and a pipe connected thereto.short distance into the flared mouth of the 5. A device of the characterdescribed, discharge passage,` and webs holding -said comprising a pairohoods spaced apart, -a hoods in fixed relation to one another.discharge passage throilgh o ne of said hoo'ds LL. A device .of thecharacter described' communicating with the space between the comprisinga .pair of substantially conicali vhoods and a blast nozzle arranged todirect hoods arranged one within the other and a fluid jet through 'Saiddischarge passage. spaced apart to forni an annular passage, a necksecured to the inner hood having a dismy hand in the presence of twoWitnesses. charge passage therethrough cominunicat- JAMES M. COLEMAN.ing with the annular passage, a nozzle Within the outer hood projectinga short distance vitnesses:

STUART R. W. ALLEN, G. M. MORELAND.

In witness whereof I have hereunto set

